EP4362051A1 - Carte de circuit imprimé, transformateur de puissance et son procédé de fabrication - Google Patents

Carte de circuit imprimé, transformateur de puissance et son procédé de fabrication Download PDF

Info

Publication number
EP4362051A1
EP4362051A1 EP23204030.3A EP23204030A EP4362051A1 EP 4362051 A1 EP4362051 A1 EP 4362051A1 EP 23204030 A EP23204030 A EP 23204030A EP 4362051 A1 EP4362051 A1 EP 4362051A1
Authority
EP
European Patent Office
Prior art keywords
pcb
primary
coil
coupling coil
windings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23204030.3A
Other languages
German (de)
English (en)
Inventor
Anup ANURAG
Chi Zhang
Ruxi Wang
Zhiyu Shen
Peter Mantovanelli Barbosa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delta Electronics Inc
Original Assignee
Delta Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US18/049,491 external-priority patent/US20240186054A1/en
Application filed by Delta Electronics Inc filed Critical Delta Electronics Inc
Publication of EP4362051A1 publication Critical patent/EP4362051A1/fr
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/005—Impregnating or encapsulating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/022—Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings
    • H01F2027/2809—Printed windings on stacked layers

Definitions

  • the present disclosure relates to a printed circuit board (PCB) for a power supply. More specifically, the present disclosure relates to a power transformer for the power supply and a manufacturing method thereof.
  • PCB printed circuit board
  • SiC MOSFETs Silicon Carbide metal-oxide-field-effect transistors
  • SiC IGBTs Silicon Carbide insulated-gate-bipolar-transistors
  • GaN FETs Gallium Nitride Field Effect Transistors
  • the isolation is typically obtained by a conventional transformer using a magnetic core.
  • This solution has been widely used in the industry as well as the academia for both silicon and silicon carbide devices, especially when the blocking voltage of each device is less than 3.3 kV This solution is also used for silicon devices with higher blocking voltage ( ⁇ 6.5 kV).
  • a small parasitic capacitance is imperative for driving fast switching SiC devices.
  • FIG. 1 shows a conventional isolated power supply with a series-series resonant converter.
  • both resonant and non-resonant topologies can be used to form the primary side of the isolated power supply.
  • the diodes in the secondary side can also be replaced by active devices under certain conditions.
  • Using this structure for driving medium voltage SiC devices requires certain changes in the structure of the conventional transformer core, to account for the high voltage blocking capacity and the requirement of low parasitic capacitance.
  • references disclose conventional transformer structures that provide the required MV (medium voltage) isolation for the gate drivers, and have been demonstrated for MV SiC power devices. Nevertheless, while the techniques disclosed in the references can achieve a high isolation along with a reduction in parasitic capacitance, they result in a high device volume and thus are difficult to manufacture.
  • Kadavelugu's design a toroidal magnetic core is used with copper wires wound across the same with Kapton tape in between to achieve the required insulation. This, however, gives a high parasitic capacitance and the Kapton tape does not provide a reliable insulation for the MV isolation.
  • Anurag's solution and Zhang's solution the copper wire used in Kadavelugu's solution was replaced with PCB (printed circuit board) winding and the toroidal shaped core is changed to two connected C-cores. Zhang enclosed the whole power supply in a potting material. This increases the reliability of the isolated power supply, but due to the presence of two C-cores leads to difficulty in manufacturing.
  • Rothmund achieves the required MV isolation of the transformer by separating the cores and placing an air gap between them. The winding is realized using litz wire and the entire isolated power supply was enclosed in a potting material.
  • the present disclosure provides a power transformer including: a primary winding and a secondary winding; a primary magnetic core wound by the primary winding; a secondary magnetic core wound by the secondary winding; and an electrically conductive coupling coil wound about the primary and secondary magnetic cores.
  • the primary winding includes a first top coil and a first bottom coil electrically connected to the first top coil
  • the secondary winding includes a second top coil and a bottom coil electrically connected to the second top coil
  • the coupling coil is a closed loop disposed between the first and second top coils and the first and second bottom coils.
  • the power transformer further includes a printed circuit board (PCB) having a first hole and a second hole, wherein the first and second top coils are disposed on a top surface of the PCB, wherein the first and second bottom coils are disposed on a bottom surface of the PCB, and wherein the coupling coil is embedded in a central layer of the PCB.
  • PCB printed circuit board
  • the primary magnetic core is inserted in the first hole and the secondary magnetic core is inserted in the second hole.
  • the power transformer further includes a printed circuit board (PCB) having a first hole and a second hole, wherein the primary and secondary windings are embedded in a central layer of the PCB, and wherein the coupling coil is disposed on a surface of the PCB.
  • PCB printed circuit board
  • the coupling coil includes a first closed loop and a second closed loop.
  • the primary and secondary windings are disposed between the first and second closed loops.
  • the power transformer further includes a printed circuit board (PCB) having a first hole and a second hole, wherein the primary and secondary windings are embedded in a central layer of the PCB, wherein the first closed loop is disposed on a top surface of the PCB, and wherein the second closed loop is disposed on a bottom surface of the PCB.
  • PCB printed circuit board
  • the primary magnetic core is inserted in the first hole and the secondary magnetic core is inserted in the second hole.
  • the present disclosure provides a printed circuit board (PCB), including: a primary winding wound about a first hole of the PCB; a secondary winding wound about a second hole of the PCB; and a coupling coil forming a closed loop surrounding the first and second holes of the PCB.
  • PCB printed circuit board
  • the coupling coil is embedded in a central layer of the PCB.
  • the coupling coil includes a plurality of conductive loops that are electrically insulated from each other.
  • the primary winding includes a top layer on a top surface of the PCB and a bottom layer on a bottom surface of the PCB, the top and bottom layers of the primary winding being electrically connected.
  • the secondary winding includes a top layer on a top surface of the PCB and a bottom layer on a bottom surface of the PCB, the top and bottom layers of the secondary winding being electrically connected.
  • the primary and secondary windings are embedded in a central layer of the PCB.
  • the coupling coil is disposed on a top surface of the PCB
  • the coupling coil includes a first coupling coil and a second coupling coil, wherein the first coupling coil is disposed on a top surface of the PCB and the second coupling coil is disposed on a bottom surface of the PCB.
  • the PCB further includes primary terminals to receive an input voltage applied to the primary winding.
  • the PCB further includes secondary terminals to provide an output voltage induced by the secondary winding.
  • the present disclosure provides a method for manufacturing a transformer, including: providing a container having an opening; inserting a plurality of PCB-based windings in the container through the opening, each of the plurality of PCB-based windings having one or more terminals, such that all the terminals of the plurality of PCB-based windings are arranged at a same side of the container; and encapsulating the transformer by filling an encapsulant in the container through the opening, with each of the terminals of the plurality of PCB-based windings being connected to an electric wire leading exterior to the encapsulant.
  • the method for manufacturing a transformer further includes: prior to inserting the plurality of PCB-based windings in the container, inserting a magnetic core through a central through hole of each of the plurality of PCB-based windings.
  • One embodiment of the present disclosure is aimed at an isolated power supply for a gate driver using a coupled transformer capable of being reliably utilized in medium voltage converter systems.
  • the isolated power supply includes a coupled transformer and a resonant converter.
  • the coupled transformer is coupled using two magnetic cores and coupling coils.
  • the structure helps in achieving a low parasitic capacitance between the primary and secondary windings, while maintaining a high voltage insulation, which is necessary for operating medium voltage converter systems.
  • the low parasitic capacitance between the primary and the secondary winding reduces the effect of the fast-switching transients (dv/dt) of the device.
  • FIG. 1 shows a schematic diagram of a series-series resonant converter 100 as an isolated power supply for a gate driver.
  • a resonant converter is typically used over non-resonant counterparts to reduce the effect of the leakage inductance on the output voltage regulation of the converter.
  • a full-bridge inverter 102 is used to generate a high frequency AC signal from the DC voltage (v dc,in ).
  • the resonant tank includes capacitors C 1 and C 2 connected in series with the transformer on both the primary and the secondary side.
  • a diode bridge rectifier 104 is connected on the secondary side to convert the high frequency AC signal to an isolated DC voltage.
  • FIG. 2 shows a schematic diagram of a conventional isolated power supply based on a transformer.
  • the series-series compensated topology, as well as the diode bridge rectifier is shown in a simplified version in the figure.
  • a conventional transformer having a complete closed magnetic core is used as the isolation structure for the isolated power supply.
  • these types of transformers are used for providing electrical insulation.
  • the major advantage of using such a structure is that this structure offers a very high magnetizing inductance and low leakage inductance which is preferred in certain applications since the core does not have any air gap and the windings are placed closed to the core. Since these structures offer a low leakage inductance, a non-resonant topology can also be used to drive these transformers.
  • the windings may also be made on a PCB based structure.
  • this generally increases the leakage inductance of the transformer.
  • the insulation needs to be achieved between the windings and the core, which might not always be preferred.
  • FIG. 3 is a schematic diagram of a conventional isolated power supply based on a transformer with air gap and insulation.
  • the isolated power supply as shown in FIG. 3 is a design variation of that shown in FIG. 2 .
  • a small air gap is introduced between the cores, and an insulation layer is provided.
  • This structure offers a lower magnetizing inductance as compared to FIG. 2 .
  • this design proves to be advantageous when a medium/high voltage isolation is required between the primary side and the secondary side winding.
  • the insulation requirement transfers from the winding-to-core to the insulation between the air gap, and it is easier to achieve this insulation.
  • FIG. 4 is a schematic diagram of a power supply based on air core with an interlink coil.
  • an air core transformer is introduced, which includes the primary winding and the secondary winding, without any magnetic coupling between them.
  • the structure does not contain any magnetic material.
  • An interlink wire 410 is used to improve the coupling between the primary and the secondary winding structure.
  • FIG. 5 illustrates a schematic diagram of an isolated power supply 500 including coupling coils and ferrite cores to improve the coupling between primary and secondary windings, in accordance with an embodiment of the present disclosure.
  • each isolated power supply 500 for gate driver includes a primary winding 510 with a magnetic material (e.g., a ferrite core), a secondary winding 520 with a magnetic material (e.g., a ferrite core) and a coupling coil 530, along with additional power electronic converter systems.
  • the presence of the magnetic materials between the individual windings helps in increasing the magnetic coupling between primary and secondary windings 510 and 520.
  • Coupling coil 530 is added to further improve the magnetic coupling between primary and secondary windings 510 and 520.
  • Primary winding 510, secondary winding 520, coupling coil 530, and the magnetic cores are arranged in such a way that it provides an acceptable magnetic coupling, while maintaining a high voltage insulation between primary and secondary windings 510 and 530. This maintains the electric field in the structure to be less than 10 kV/mm. Further, the arrangement is made in such a manner that the capacitance between primary and secondary windings 510 and 520 is low.
  • the coupled transformer is connected to a power electronics converter which converts DC to high frequency AC.
  • the output side of this coupled transformer is connected to a rectifier which converts the high frequency AC to DC which can be connected to the load.
  • inductor Li could be realized as the self-inductance of primary winding 510 of the coupled transformer and inductor L 2 may be realized as the self-inductance of secondary winding 520 of the coupled transformer.
  • the coupled transformer is assumed to have a coupling factor k, which may be in range of 0.2-0.5 (loosely coupled).
  • Capacitor Ci is connected with primary winding 510 of the coupled transformer and capacitor C 2 is connected with secondary winding 520 of the coupled transformer.
  • capacitors are designed in such a way that it compensates for the low coupling factor of the coupled transformer.
  • FIG. 7 illustrates a graphical representation of the gain curve of the series-series resonant converter of FIG. 6 , and the choice for the operating frequency of the converter to achieve a load independent operation.
  • the gain of the converter does not change, which gives a load independent output voltage.
  • the phase angle of the operating point, as seen by the primary side converter is positive which guarantees soft-switching behavior of the MOSFETs, thus minimizing losses in the converter system.
  • a linear voltage regulator may be connected before the output DC port to compensate for small variations in the voltage due to practical considerations.
  • FIGs. 8 and 9 show two possible rectifier circuits that may be used in this isolated gate driver system.
  • FIG. 8 illustrates a schematic diagram of a rectifier having a diode bridge.
  • FIG. 9 illustrates a schematic diagram of a rectifier having a voltage doubler. A capacitor is connected at the output of the diode bridge to filter out any ripples in the voltage. The load is connected across the capacitor.
  • FIG. 10 illustrates an isolated gate driver transformer 1000 for a gate driver, in accordance with an embodiment of the present disclosure.
  • the isolated gate driver transformer 1000 includes two windings, namely, a primary winding 1010 and a secondary winding 1020. Magnetic cores 1040A and 1040B are inserted between individual windings to increase the inductive coupling between them.
  • a coupling coil 1030 is also provided to further increase the inductive coupling between primary and secondary windings 1010 and 1020. The position of coupling coil 1030 determines the inductive coupling.
  • input voltage can be applied to primary winding 1010 via primary terminals 1012, while, output voltage can be harvested from secondary winding 1020 via secondary terminals 1022.
  • FIGs. 11A and 11B are sectional views of a PCB-based transformer of FIG. 10 , demonstrating the placement of the coupling coil with respect to the primary and secondary windings.
  • FIGs. 11A and 11B show two different options for the placement of coupling coil 1030. It should be noted that in the embodiment the placement of coupling coil 1030 needs to be carried out based on the maximum electric field as well as the inductive coupling. Generally, when the coupling coil is placed between individual coils of the primary/secondary windings, as shown in FIG. 11A , a higher coupling is observed, along with a high electric field. Moving the coupling coil to either the top side or the bottom side of the windings, as shown in FIG. 11B , reduces the maximum electric field, but also reduces the coupling.
  • primary winding 1010 includes a top coil layer (made of copper) on a top surface of PCB 1005, and a bottom coil layer (made of copper) on a bottom surface of PCB 1005. Top and bottom coil layers of primary winding 1010 are electrically connected in series.
  • secondary winding 1020 includes a top coil layer (made of copper) on a top surface of PCB 1005, and a bottom coil layer (made of copper) on a bottom surface of PCB 1005. Top and bottom coil layers of secondary winding 1020 are electrically connected in series.
  • Primary winding 1010 is wound about a primary hole 1001 on PCB 1005, and a first magnetic core can be inserted therein.
  • Secondary winding 1020 is wound about a secondary hole 1002 on PCB 1005, and a second magnetic core can be inserted therein. It is appreciated that the first and second magnetic cores may be a single piece or two isolated pieces as shown in FIG. 10 .
  • Coupling coil 1030 is embedded in the middle (central layer) of PCB 1005 to form a closed loop that surrounds both primary and secondary holes 1001 and 1002. It is appreciated that multiple loops of coupling coil 1030 could be embedded in PCB 1005 depending on design choices.
  • Coupling coil 1030 may be made of any suitable material (e.g., copper or aluminum) that enhances magnetic coupling between primary and secondary windings 1010 and 1020.
  • primary winding 1010 includes one or more series-connected coil layers embedded in PCB 1005, and secondary winding 1020 includes one or more series-connected coil layers embedded in PCB 1005.
  • Primary winding 1010 is wound about a primary hole 1001 on PCB 1005, and a first magnetic core can be inserted therein.
  • Secondary winding 1020 is wound about a secondary hole 1002 on PCB 1005, and a second magnetic core may be inserted therein.
  • Coupling coil 1030 may be formed on the top surface of PCB 1005 to form a closed loop that surrounds primary and secondary holes 1001 and 1002. It is appreciated that one or more additional coupling coils can be formed on a bottom surface of PCB 1005 or embedded in PCB 1005 depending on design choices.
  • FIG. 12 illustrates an isolated gate driver transformer 1200 for a gate driver having increased coupling between primary and secondary windings 1210 and 1220, in accordance with another embodiment of the present disclosure.
  • two coupling coils 1230 are included to the isolation stage to further increase the inductive coupling coefficient between primary and the secondary windings 1210 and 1220.
  • FIGs. 13A and 13B are sectional views of a PCB-based transformer of FIG. 12 , demonstrating the placement of the coupling coil with respect to the primary and secondary windings.
  • FIGs. 13A and 13B show two different placement options for coupling coils 1230.
  • input voltage can be applied to primary winding 1210 via primary terminals 1212, while, output voltage can be harvested from secondary winding 1220 via secondary terminals 1222.
  • first and second coupling coils 1230 are respectively formed on top and bottom surfaces of PCB 1205, while primary and secondary windings 1210 and 1220 are disposed in the middle of PCB 1205.
  • Primary winding 1210 is wound about a primary hole 1201 on PCB 1205, and a first magnetic core may be inserted therein.
  • Secondary winding 1220 is wound about a secondary hole 1202 on PCB 1205, and a second magnetic core may be inserted therein. It is appreciated that the first and second magnetic cores may be a single piece or two isolated pieces as shown in FIG. 12 .
  • Coupling coils 1230 are respectively formed on top and bottom surfaces of PCB 1205 to form closed loops that surround both primary and secondary holes 1201 and 1202.
  • first and second coupling coils 1230 are disposed in the middle of PCB 1205, while primary and secondary windings 1210 and 1220 are formed on top and bottom surfaces of PCB 1205.
  • Coupling coils 1230 form closed loops that surround both primary and secondary holes 1201 and 1202, and are electrically insulated between each other. It is appreciated that variations to the quantity of coupling coils 1230 and the placement thereof can be carried out by one of ordinary skill in the art.
  • FIG. 14 illustrates a schematic diagram of a coupled transformer with primary and secondary windings and a coupling coil using copper wires and plastic (or any non-conductive material) bobbins and housing magnetic cores (made of, e.g., ferrite), in accordance with a further embodiment of the present disclosure.
  • primary winding 1410 is wound about first bobbin 1450
  • secondary wining 1420 is would about second bobbin 1460.
  • Each of first and second bobbins 1450 and 1460 includes a magnetic core 1440 inserted therein.
  • Coupling coil 1430 forms a closed loop around both primary and secondary windings 1410 and 1420 with magnetic cores 1440 inserted in first and second bobbins 1450 and 1460, on which primary and secondary windings 1410 and 1420 are respectively wound.
  • FIGs. 15A and 15B illustrate a variation of the coupled transformer of FIG. 14 , with the windings and the coupling coil wound about a single magnetic core structure.
  • primary and the secondary windings 1510 and 1520 are placed around the same magnetic core 1540.
  • the structure may be realized using two different PCBs 1502 and 1504 with one placed on top of the other, with or without a gap between the PCBs.
  • coupling coil 1530 is realized using a conductive copper wire placed around the primary winding and the secondary winding to improve the magnetic coupling.
  • coupling coil 1530 includes a first semicircular wire 1531 proximate primary winding 1510, a second semicircular wire 1532 proximate secondary winding 1520, and two side wires 1533 connecting the first and second semicircular wires 1531 and 1532, thereby forming a closed loop.
  • coupling coil 1530 may not be required, and the required inductive coupling may be established by the ferrite core itself as shown in FIGs. 16A and 16B . Similar to the case in FIGs. 15A and 15B , the design in FIGs. 16A and 16B may be realized using PCB or with plastic (or any non-conductive material) based bobbin structure.
  • FIGs. 17A and 17B illustrate another variation of the coupled transformer of FIG. 14 , with a primary winding and multiple secondary windings wound about a single magnetic core structure, without the coupling coil.
  • one PCB-based primary winding 1710 and multiple PCB-based secondary windings 1720 are coupled together through a magnetic core 1740.
  • Each of PCB-based primary and second windings 1710 and 1720 has a central hole, such that magnetic core 1740 can be inserted therein.
  • PCB-based primary and second windings 1710 and 1720 are stacked on top of each other and separated by an equal distance.
  • the multiple PCB-based secondary windings 1720 can be electrically connected in series to form a coil of more turns, or electrically separated to harvest electric power independently. In one embodiment, it is appreciated that any suitable quantity of PCB-based primary and second windings 1710 and 1720 can be used in accordance with design choices.
  • FIG. 18 illustrates a container 1800 for housing a PCB-based transformer, in accordance with an embodiment of the present disclosure.
  • container 1800 includes a bottom plate 1810 and four side plates 1820, so as to form a hollow rectangular cuboid having with an opening.
  • Bottom plate 1810 and side plates 1820 may be manufactured as an integrated piece using a suitable additive manufacturing process, such as, 3D printing.
  • a plurality of slots 1830 may be formed on opposing side plates 1820 to guide PCB-based windings into and out of container 1800.
  • Additional slots 1840 may be formed on bottom plate 1810 to enhance the mechanical stability of the PCB-based windings when inserted in container 1800.
  • Slots 1830 and 1840 may be spatially separated with each other by a predetermined distance to ensure that PCB-based windings are properly separated when inserted.
  • PCB-based primary and secondary windings can be inserted into or pulled out from container 1800 from different sides of container 1800.
  • a first opening is formed on a first side of container 1800 for insertion of the PCB-based primary windings
  • a second opening is formed on a second side of container 1800 opposing the first side for insertion of the PCB-based secondary windings.
  • FIG. 19 illustrates a container 1900 in which a PCB-based transformer is housed, in accordance with an embodiment of the present disclosure.
  • a PCB-based transformer in accordance with an embodiment of the present disclosure.
  • four PCB-based windings 1910 are inserted in container 1900. It is appreciated that some of PCB-based windings 1910 can serve as a primary winding, while the other ones of PCB-based windings 1910 can serve as a secondary winding.
  • Each of PCB-based windings 1910 includes a central through hole 1912 for a magnetic core 1916 (having a suitable size that fits in container 1900) to penetrate therethrough, as shown in FIG.
  • PCB-based windings 1910 can be encapsulated by filling a resin material in container 1900.
  • Terminals 1914 of all PCB windings 1910 can be arranged at the same side of container 1900.
  • each of terminals 1914 is electrically coupled to an electric wire, leading to the outside of the encapsulant (after terminals 1914 are buried by the encapsulant), so as to be exposed exterior to the encapsulant and allow easy electrical connection after the encapsulation process.
  • the present disclosure also provides a method for manufacturing a transformer, which includes the following steps. First, a container having an opening is provided. Then, a plurality of PCB-based windings are inserted in the container through the opening, and each PCB-based winding has one or more terminals such that all the terminals of the PCB-based windings are arranged at a same side of the container. Then, the transformer is encapsulated by filling an encapsulant in the container through the opening, with each PCB-based winding being connected to an electric wire leading exterior to the encapsulant. In an embodiment, prior to inserting the PCB-based windings in the container, the method further includes a step of inserting a magnetic core through a central through hole of each PCB-based winding.
  • the method for manufacturing a transformer of one embodiment of the present disclosure includes:

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
EP23204030.3A 2022-10-25 2023-10-17 Carte de circuit imprimé, transformateur de puissance et son procédé de fabrication Pending EP4362051A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18/049,491 US20240186054A1 (en) 2022-10-25 Isolated power supply for gate driver

Publications (1)

Publication Number Publication Date
EP4362051A1 true EP4362051A1 (fr) 2024-05-01

Family

ID=88417496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23204030.3A Pending EP4362051A1 (fr) 2022-10-25 2023-10-17 Carte de circuit imprimé, transformateur de puissance et son procédé de fabrication

Country Status (1)

Country Link
EP (1) EP4362051A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1536436A1 (fr) * 2002-06-26 2005-06-01 Premo, S.A. Procede de fabrication de transformateurs planaires et transformateur planaire fabrique selon ledit procede
EP2144070A1 (fr) * 2008-07-11 2010-01-13 Liaisons Electroniques-Mecaniques Lem S.A. Capteur pour environnement de haute tension
US20150332838A1 (en) * 2012-11-16 2015-11-19 Phoenix Contact Gmbh & Co.Kg Planar Transformer
US10809326B2 (en) 2018-01-29 2020-10-20 GE Precision Healthcare LLC Gate driver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1536436A1 (fr) * 2002-06-26 2005-06-01 Premo, S.A. Procede de fabrication de transformateurs planaires et transformateur planaire fabrique selon ledit procede
EP2144070A1 (fr) * 2008-07-11 2010-01-13 Liaisons Electroniques-Mecaniques Lem S.A. Capteur pour environnement de haute tension
US20150332838A1 (en) * 2012-11-16 2015-11-19 Phoenix Contact Gmbh & Co.Kg Planar Transformer
US10809326B2 (en) 2018-01-29 2020-10-20 GE Precision Healthcare LLC Gate driver

Non-Patent Citations (8)

* Cited by examiner, † Cited by third party
Title
A. ANURAGS. ACHARYAY. PRABOWOG. GOHILS. BHATTACHARYA: "Design Considerations and Development of an Innovative Gate Driver for Medium-Voltage Power Devices With High dv/dt", IEEE TRANSACTIONS ON POWER ELECTRONICS, vol. 34, no. 6, June 2019 (2019-06-01), pages 5256 - 5267, XP011721425, DOI: 10.1109/TPEL.2018.2870084
A. KADAVELUGUS. BHATTACHARYA: "Design considerations and development of gate driver for 15 kV SiC IGBT", IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION - APEC 2014, vol. 2014, 2014, pages 1494 - 1501, XP032591081, DOI: 10.1109/APEC.2014.6803505
GOTTSCHLICH ET AL.: "A galvanically isolated gate driver with low coupling capacitance for medium voltage SiC MOSFETs", 2016 18TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'16 ECCE EUROPE
HU ET AL.: "Current-Transformer Based Gate-Drive Power Supply with Reinforced Isolation", 2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE, 2018
L. ZHANG ET AL.: "Design Considerations for High-Voltage Insulated Gate Drive Power Supply for 10-kV SiC MOSFET Applied in Medium-Voltage Converter", IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, vol. 68, no. 7, July 2021 (2021-07-01), pages 5712 - 5724, XP011845427, DOI: 10.1109/TIE.2020.3000131
MAINALI ET AL.: "Design of Gate Drive Power Supply with Air Core Transformer for High dv/dt Switching", 2018 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE, 2018
ROTHMUND ET AL.: "Highly Compact Isolated Gate Driver With Ultrafast Overcurrent Protection for 10 kV SiC MOSFETs", CPSS TRANSACTIONS ON POWER ELECTRONICS AND APPLICATIONS, vol. 3, no. 4, December 2018 (2018-12-01), pages 278 - 291
WANG R. ET AL., GATE DRIVER

Similar Documents

Publication Publication Date Title
Bortis et al. Design procedure for compact pulse transformers with rectangular pulse shape and fast rise times
Hu et al. High-density current-transformer-based gate-drive power supply with reinforced isolation for 10-kV SiC MOSFET modules
KR102020648B1 (ko) 변압기 및 이를 가지는 llc 공진형 컨버터
US10381914B2 (en) Integrated transformer
US10748697B2 (en) Embedded solenoid transformer for power conversion
US10819247B2 (en) Direct-current power supply device with primary and secondary magnetic cores
WO2011154993A1 (fr) Transformateur de séparation et dispositif d'alimentation électrique
CN110634655B (zh) 磁集成器件、功率变换电路、充电器及电动车辆
JPWO2012157053A1 (ja) リアクトル装置及びそれを用いた電力変換器
CN110212784B (zh) 一种用于单相三电平交直流谐振变换器的无源元件集成装置
Kusaka et al. Isolation system with wireless power transfer for multiple gate driver supplies of a medium voltage inverter
CA2540705A1 (fr) Diminution du courant ondulatoire pour transformateurs
KR101604325B1 (ko) 변압기와 이를 포함하는 고전압 전원장치
US11336184B2 (en) Power converter
Anurag et al. A gate driver design for medium voltage silicon carbide power devices with high dv/dt
EP4362051A1 (fr) Carte de circuit imprimé, transformateur de puissance et son procédé de fabrication
US20220037080A1 (en) Shielding arrangements for transformer structures
US20240186054A1 (en) Isolated power supply for gate driver
Liu et al. Compact MV-insulated MHz transformer-coupled gate driver with staged turn-off scheme for series-connected power devices in DC circuit breaker applications
CN109891731A (zh) 功率转换装置
Emori et al. Discussion on design optimization of inductor loss focused on copper loss and iron loss
EP2647117B1 (fr) Alimentation électrique à mode résonant comprenant une inductance intégrée
Anurag et al. High-voltage isolated power supply structure for gate drivers of medium-voltage SiC devices
TW202418316A (zh) 電力變壓器、電路板及變壓器的製造方法
US11923122B2 (en) Inverter apparatus

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR